Sophos have written up a nice, comprehensive overview of IPv6 and why we need to all switch to it from a security perspective. Do take a read and always consider whether your hosting provider supports IPv6 before making any moves. GigaTux supports it natively in the US and Germany and is less than 1ms from the nearest IPv6 tunnel in the UK.
IPv6, has the features and solutions the modern Internet requires that IPv4 can’t provide: greater connection integrity and security as well as the ability to support the vast number of web-capable devices we’ll need for a long time to come. But even as IPv6 brings some security enhancements, its significant changes could also introduce security holes into your environment. So why would anyone want to adopt IPv6 if it could be troublesome?
